“That leaves the field clear,” said Strudwarden, “but unfortunately my brain is equally a blank as far as any lethal project is concerned. The little beast is so monstrously inactive; I can’t pretend that it leapt into the bath and drowned itself, or that it took on the butcher’s mastiff in unequal combat and got chewed up. In what possible guise could death come to a confirmed basket-dweller? It would be too suspicious if we invented a Suffragette raid and pretended that they invaded Lena’s boudoir and threw a brick at him. We should have to do a lot of other damage as well, which would be rather a nuisance, and the servants would think it odd that they had seen nothing of the invaders.”

“I have an idea,” said Elsie; “get a box with an airtight lid, and bore a small hole in it, just big enough to let in an indiarubber tube. Pop Louis, kennel and all, into the box, shut it down, and put the other end of the tube over the gas-bracket. There you have a perfect lethal chamber. You can stand the kennel at the open window afterwards, to get rid of the smell of gas, and all that Lena will find when she comes home late in the afternoon will be a placidly defunct Louis.”